mirror of
https://github.com/X11Libre/xserver.git
synced 2026-10-09 23:22:22 +00:00
Refactor Solaris mapping code to work with standard shared/vidmem.c
Also merge sun_bios.c into sun_vid.c and upstream Solaris patch to keep aperture device open, to allow mappings to occur after X server has given up uid 0.
This commit is contained in:
Alan Coopersmith
parent
2809a56b4b
commit
70e18a3b6b
3 changed files with 202 additions and 232 deletions
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@ -1,6 +1,7 @@
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/*
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* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
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* Copyright 1993 by David Wexelblat <dwex@goblin.org>
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* Copyright 1999 by David Holland <davidh@iquest.net>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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@ -21,6 +22,33 @@
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* OF THIS SOFTWARE.
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*
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*/
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/* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons
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* to whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Except as contained in this notice, the name of a copyright holder
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* shall not be used in advertising or otherwise to promote the sale, use
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* or other dealings in this Software without prior written authorization
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* of the copyright holder.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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@ -29,121 +57,176 @@
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#include <sys/types.h> /* get __x86 definition if not set by compiler */
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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#define _NEED_SYSI86
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# define _NEED_SYSI86
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#endif
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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#include "xf86OSpriv.h"
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#include <sys/mman.h>
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/***************************************************************************/
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/* Video Memory Mapping section */
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/***************************************************************************/
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char *apertureDevName = NULL;
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static char *apertureDevName = NULL;
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static int apertureDevFD_ro = -1;
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static int apertureDevFD_rw = -1;
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_X_EXPORT Bool
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xf86LinearVidMem(void)
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static Bool
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solOpenAperture(void)
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{
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int mmapFd;
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if (apertureDevName)
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return TRUE;
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if (apertureDevName == NULL)
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{
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apertureDevName = "/dev/xsvc";
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if ((mmapFd = open(apertureDevName, O_RDWR)) < 0)
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if ((apertureDevFD_rw = open(apertureDevName, O_RDWR)) < 0)
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{
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xf86MsgVerb(X_WARNING, 0,
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"solOpenAperture: failed to open %s (%s)\n",
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apertureDevName, strerror(errno));
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apertureDevName = "/dev/fbs/aperture";
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if((mmapFd = open(apertureDevName, O_RDWR)) < 0)
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{
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xf86MsgVerb(X_WARNING, 0,
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"xf86LinearVidMem: failed to open %s (%s)\n",
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apertureDevName, strerror(errno));
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xf86MsgVerb(X_WARNING, 0,
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"xf86LinearVidMem: either /dev/fbs/aperture or /dev/xsvc"
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" device driver required\n");
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xf86MsgVerb(X_WARNING, 0,
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"xf86LinearVidMem: linear memory access disabled\n");
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apertureDevName = NULL;
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return FALSE;
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}
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apertureDevFD_rw = open(apertureDevName, O_RDWR);
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}
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close(mmapFd);
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return TRUE;
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apertureDevFD_ro = open(apertureDevName, O_RDONLY);
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if ((apertureDevFD_rw < 0) || (apertureDevFD_ro < 0))
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{
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xf86MsgVerb(X_WARNING, 0,
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"solOpenAperture: failed to open %s (%s)\n",
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apertureDevName, strerror(errno));
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xf86MsgVerb(X_WARNING, 0,
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"solOpenAperture: either /dev/fbs/aperture"
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" or /dev/xsvc required\n");
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apertureDevName = NULL;
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if (apertureDevFD_rw >= 0)
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{
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close(apertureDevFD_rw);
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}
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apertureDevFD_rw = -1;
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if (apertureDevFD_ro >= 0)
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{
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close(apertureDevFD_ro);
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}
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apertureDevFD_ro = -1;
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return FALSE;
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}
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}
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return TRUE;
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}
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_X_EXPORT pointer
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xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size)
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static pointer
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solMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int Flags)
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{
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pointer base;
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int fd;
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char vtname[20];
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pointer base;
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int fd;
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int prot;
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/*
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* Solaris 2.1 x86 SVR4 (10/27/93)
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* The server must treat the virtual terminal device file as the
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* standard SVR4 /dev/pmem.
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*
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* Using the /dev/vtXX device as /dev/pmem only works for the
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* A0000-FFFFF region - If we wish you mmap the linear aperture
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* it requires a device driver.
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*
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* So what we'll do is use /dev/vtXX for the A0000-FFFFF stuff, and
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* try to use the /dev/fbs/aperture or /dev/xsvc driver if the server
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* tries to mmap anything > FFFFF. Its very very unlikely that the
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* server will try to mmap anything below FFFFF that can't be handled
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* by /dev/vtXX.
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*
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* DWH - 2/23/94
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* DWH - 1/31/99 (Gee has it really been 5 years?)
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*
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* Solaris 2.8 7/26/99
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* Use /dev/xsvc for everything
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*
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* DWH - 7/26/99 - Solaris8/dev/xsvc changes
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*
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* TSI - 2001.09 - SPARC changes
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*/
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if (Flags & VIDMEM_READONLY)
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{
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fd = apertureDevFD_ro;
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prot = PROT_READ;
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}
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else
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{
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fd = apertureDevFD_rw;
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prot = PROT_READ | PROT_WRITE;
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}
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#if defined(__i386__) && !defined(__SOL8__)
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if(Base < 0xFFFFF)
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sprintf(vtname, "/dev/vt%02d", xf86Info.vtno);
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else
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#endif
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{
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if (!xf86LinearVidMem())
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FatalError("xf86MapVidMem: no aperture device\n");
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if (fd < 0)
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{
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xf86DrvMsg(ScreenNum, X_ERROR,
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"solMapVidMem: failed to open %s (%s)\n",
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apertureDevName, strerror(errno));
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return NULL;
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}
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strcpy(vtname, apertureDevName);
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}
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base = mmap(NULL, Size, prot, MAP_SHARED, fd, (off_t)Base);
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fd = open(vtname, (Flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
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if (fd < 0)
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FatalError("xf86MapVidMem: failed to open %s (%s)\n",
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vtname, strerror(errno));
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if (base == MAP_FAILED) {
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xf86DrvMsg(ScreenNum, X_ERROR,
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"solMapVidMem: failed to mmap %s (0x%08lx,0x%lx) (%s)\n",
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apertureDevName, Base, Size, strerror(errno));
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return NULL;
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}
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base = mmap(NULL, Size,
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(Flags & VIDMEM_READONLY) ?
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PROT_READ : (PROT_READ | PROT_WRITE),
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MAP_SHARED, fd, (off_t)Base);
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close(fd);
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if (base == MAP_FAILED)
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FatalError("xf86MapVidMem: mmap failure: %s\n",
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strerror(errno));
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return(base);
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return base;
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}
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/* ARGSUSED */
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_X_EXPORT void
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xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
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static void
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solUnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
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{
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munmap(Base, Size);
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if (munmap(Base, Size) != 0) {
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xf86DrvMsgVerb(ScreenNum, X_WARNING, 0,
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"solUnMapVidMem: failed to unmap %s"
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" (0x%08lx,0x%lx) (%s)\n",
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apertureDevName, Base, Size,
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strerror(errno));
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}
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}
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_X_HIDDEN void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = solOpenAperture();
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if (pVidMem->linearSupported) {
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pVidMem->mapMem = solMapVidMem;
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pVidMem->unmapMem = solUnMapVidMem;
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} else {
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xf86MsgVerb(X_WARNING, 0,
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"xf86OSInitVidMem: linear memory access disabled\n");
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}
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pVidMem->initialised = TRUE;
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}
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/*
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* Read BIOS via mmap()ing physical memory.
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*/
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_X_EXPORT int
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xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
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int Len)
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{
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unsigned char *ptr;
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int psize;
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int mlen;
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psize = getpagesize();
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Offset += Base & (psize - 1);
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Base &= ~(psize - 1);
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mlen = (Offset + Len + psize - 1) & ~(psize - 1);
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if (solOpenAperture() == FALSE)
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{
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xf86Msg(X_WARNING,
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"xf86ReadBIOS: Failed to open aperture to read BIOS\n");
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return -1;
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}
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ptr = (unsigned char *)mmap(NULL, mlen, PROT_READ,
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MAP_SHARED, apertureDevFD_ro, (off_t)Base);
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if (ptr == MAP_FAILED)
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{
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xf86Msg(X_WARNING, "xf86ReadBIOS: %s mmap failed [0x%08lx, 0x%04x]\n",
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apertureDevName, Base, mlen);
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return -1;
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}
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(void)memcpy(Buf, (void *)(ptr + Offset), Len);
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if (munmap((caddr_t)ptr, mlen) != 0) {
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xf86MsgVerb(X_WARNING, 0,
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"solUnMapVidMem: failed to unmap %s"
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" (0x%08lx,0x%lx) (%s)\n",
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apertureDevName, ptr, mlen, strerror(errno));
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}
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return Len;
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}
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/***************************************************************************/
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/* I/O Permissions section */
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/***************************************************************************/
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@ -156,28 +239,28 @@ _X_EXPORT Bool
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xf86EnableIO(void)
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{
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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if (ExtendedEnabled)
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return TRUE;
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if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
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xf86Msg(X_WARNING,"xf86EnableIOPorts: Failed to set IOPL for I/O\n");
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return FALSE;
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}
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ExtendedEnabled = TRUE;
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#endif /* i386 */
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if (ExtendedEnabled)
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return TRUE;
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if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
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xf86Msg(X_WARNING, "xf86EnableIOPorts: Failed to set IOPL for I/O\n");
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return FALSE;
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}
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ExtendedEnabled = TRUE;
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#endif /* i386 */
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return TRUE;
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}
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_X_EXPORT void
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xf86DisableIO(void)
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{
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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if(!ExtendedEnabled)
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return;
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if(!ExtendedEnabled)
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return;
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sysi86(SI86V86, V86SC_IOPL, 0);
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sysi86(SI86V86, V86SC_IOPL, 0);
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ExtendedEnabled = FALSE;
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ExtendedEnabled = FALSE;
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#endif /* i386 */
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}
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@ -186,51 +269,40 @@ xf86DisableIO(void)
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/* Interrupt Handling section */
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/***************************************************************************/
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_X_EXPORT Bool xf86DisableInterrupts(void)
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_X_EXPORT Bool
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xf86DisableInterrupts(void)
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{
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
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return FALSE;
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if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
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return FALSE;
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#ifdef __GNUC__
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__asm__ __volatile__("cli");
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__asm__ __volatile__("cli");
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#else
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asm("cli");
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asm("cli");
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#endif /* __GNUC__ */
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if (!ExtendedEnabled)
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sysi86(SI86V86, V86SC_IOPL, 0);
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if (!ExtendedEnabled)
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sysi86(SI86V86, V86SC_IOPL, 0);
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#endif /* i386 */
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return TRUE;
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}
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_X_EXPORT void xf86EnableInterrupts(void)
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{
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
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return;
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#ifdef __GNUC__
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__asm__ __volatile__("sti");
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#else
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asm("sti");
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#endif /* __GNUC__ */
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if (!ExtendedEnabled)
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sysi86(SI86V86, V86SC_IOPL, 0);
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#endif /* i386 */
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return TRUE;
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}
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_X_EXPORT void
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xf86MapReadSideEffects(int ScreenNum, int Flags, pointer Base,
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unsigned long Size)
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xf86EnableInterrupts(void)
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{
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}
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#if defined(__i386__) || defined(__i386) || defined(__x86)
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if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
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return;
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_X_EXPORT Bool
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xf86CheckMTRR(int ScreenNum)
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{
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return FALSE;
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}
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#ifdef __GNUC__
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__asm__ __volatile__("sti");
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#else
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asm("sti");
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#endif /* __GNUC__ */
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if (!ExtendedEnabled)
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sysi86(SI86V86, V86SC_IOPL, 0);
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#endif /* i386 */
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}
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